memcached_return_t readable_error;
while ((instance= memcached_io_get_readable_server(memc, readable_error)))
{
memcached_return_t rrc= memcached_response(instance, NULL);
if (memcached_failed(rrc))
{
memcached_return_t readable_error;
while ((instance= memcached_io_get_readable_server(memc, readable_error)))
{
memcached_return_t rrc= memcached_response(instance, NULL);
if (memcached_failed(rrc))
{